Automobile-crank-case pan



C. F. ADAMSON. AUTOMOBILE CRAI/VK CASE PAN.

APPLICATION FILED OCT-21, I920 Patented Jan. 11,1921.

CECIL F. ADAMSON, OF EAST PALESTINE, OHIO.

AUTOMOBILE-CRANK-CASE PAN Application filed October 21, 1920. Serial No. 418,598.

T 0 all whom it may concern Be it known that I, CECIL F. ADAMSON, a

citizen of the United States, residing at East Palestine, county of Columbiana, State of Ohio, have invented certain new and useful Improvements in Automobile-Crank-Case Pans, of which the following is a specification.

My invention relates to the bottom plates or pans of automobile crank cases, and has for its primary object to provide an improved crank case pan adapted most efi'ectively to cool the oil contained therein. Further objects of the invention are, first, to collect all sediment and dirt, which otherwise is agitated constantly by the motion of the cranks and connecting rods dipping in the oil, and secondly, to provide for more effective lubrication when the car is running on an incline.

These objects I accomplish in the manner and by the means hereinafter described and claimed, reference being had to the accompanying. drawing, in which Figure l is a perspective View of my improved crank case pan detached.

Fig. 2 is a central vertical transverse sectional view of the same.

Fig. 3 is a longitudinal sectional View, taken on the line IIIIII of Fig. 2.

Similar numerals of referenoedenote corresponding parts in all several views.

Myimproved pan is designed more particularly for use in connection with the well known Ford cars, and is intended to replace the pan or bottom plate now in use with the crank case thereof, its shape being such that it will fit the crank of a Ford engine. Re-

ferring to the drawing, said pan is dished, and is provided on its under surface with a series of longitudinal fins or ribs 2, extending the length of the pan and up both ends of the same, as shown. Intermediate said fins are a series of smaller fins 3, the same preferably terminating at the upwardly extending portionsof the pan. These fins are formed integral with the body of the pan, and said pan on its interior is provided with a series of similar fins 4 registering with certain of the exterior fins 2 and 3, as clearly shown in Fig. 2. The pan also is formed with a series of transverse partitions 5, the same dividing the pan into a plurality of separate crank case compartments, as readily will be understood.

This pan when substituted for the pan on the crank case of a Ford engine is so positioned as to receive the lower ends of the cranks and connecting rods in the chambers formed by the transverse partitions 5, said partitions not only retaining a quantity of oil therein, into which the connecting rods will dip, but also acting as baflies to collect any; dirt or sediment moving with the oil. The exterior fins 2, 3, being exposed to the air, will exert a cooling action upon the bottom of the pan, which will be transmitted through the internal fins 4 to the oil in the chambers formed by the partitions 5.

In the Ford car construction when the engine is operating the lubricating oil is pumped to, the forward end of the crank case, and flows back to a sump in the rear, passing over the crank case base plate. With the present construction the oil is cooledyery little and becomes heated, in fact hot enough to cause the oil to become so thin or fluid as to escape in considerable quantity past the engine pistons, thereby diminishing the lubricating value, as well as increasing the carbonization of the cylinders and spark plugs. With my improved construction of pan the lubricating oil is cooled effectively, due partly to the fact that the transverse partitions 5 retain a quantity of oil for each crank and connecting rod, and to the fact that said oil so retained is subjected to the cooling action of the fins 2, 3 and 4, the result being that a considerable percentage of the oil is saved. In fact actual tests have demonstrated that this saving runs from 60 to 75 per cent.of the oil consumed in an equal mileage over that obtained with the crank case base plate now in use. Furthermore, the tendency of the cylinders and spark plugs to carbonize is reduced to a minimum, and there is a marked increase in engine power.

A further advantage of the transverse partitions 5 is that the same will retain the oil divided in the pan when the car is going up or down hill,'so that all of the cranks and connecting rods will receive a proper amount of lubrication under these conditions.

Having thus described my invention,

What I claim as new and desire to secure by Letters Patent, is:

1. An automobile crank case pan of dished contour, and prox ided with integral exterior and interior cooling fins, said fins being disposed longitudinally of the pan and registering with each other.

2. An automobile crank case pan of dished contour, and provided with integral exterior and interior cooling fins, and with integral l0 transverse partitions forming oil retaining pockets, one for each crank.

In testimony whereof, I hereunto aflix my signature.

CECIL F. ADAHSON. 

